Fig. 4

Magnetic flux density and force for the cylindrical magnet vertically positioned below the flow chamber at a distance of \({0.25\,\mathrm{\text {m}\text {m}}}\) from the bottom of the domain. The magnet has a radius of 0.5 mm and a length of 1 mm. a Magnetic flux density \(\varvec{B}\). b Magnetic force \(\varvec{F}_{\textsf {mag}}\)